ViewSonic IFP6550 - Page 102

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10.3.3 Remote Control Pass-through Mode
When PC sets the Display to Remote Control Pass through mode, the Display shall
send a 7-byte packet (followed by “CR”) in response to RCU button activation. In this
mode the RCU shall have no effect on the Display function. For example: “Volume+”
will not change the volume in the Display but only sends “Volume+” code to PC over
the RS232 port.
IR Pass Through-Function format
Reply: (Command Type=”p”)
Name Length ID Command
Type
RCU Code1
(MSB)
RCU Code2
(LSB)
CR
Byte
Count
1 Byte 2 Byte 1 Byte 1 Byte 1 Byte 1 Byte
Bytes
order
1 2~3 4 5 6 7
Example1: Remote Control pass-through when “VOL+” key is pressed for
Display (#5)
Send (Hex Format)
Name Length ID Command
Type
RCU Code1
(MSB)
RCU Code2
(LSB)
CR
Hex
0x36 0x30
0x35
0x70 0x31 0x30 0x0D
Key Code (HEX) Basic *3.1.1 Optional *3.1.1
1 01 V
2 02 V
3 03 V
4 04 V
5 05 V
6 06 V
7 07 V
8 08 V
9 09 V
0 0A V
- 0B V
RECALL (LAST) 0C V
INFO (DISPLAY) 0D V
0E
ASPECT (ZOOM, SIZE) 0F V
VOLUME UP (+) 10 V
VOLUME DOWN (-) 11 V
MUTE 12 V
CHANNEL/PAGE UP (+)/
BRIGHTNESS+
13 V